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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 826 · 40 questions
TalentJR

The fast method (Build from 10%): 10%: divide by 10. 1%: divide by 100. 5% = half of 10%, 20% = double 10%, 15% = 10% + 5%. 50% = half, 25% = half of a half.

NameDateTime takenScore ___ / 40
  1. 1.15% of 680 =
  2. 2.15% of 310 =
  3. 3.25% of 70 =
  4. 4.15% of 130 =
  5. 5.20% of 580 =
  6. 6.25% of 710 =
  7. 7.20% of 160 =
  8. 8.20% of 880 =
  9. 9.25% of 190 =
  10. 10.5% of 70 =
  11. 11.20% of 620 =
  12. 12.50% of 70 =
  13. 13.15% of 110 =
  14. 14.1% of 90 =
  15. 15.25% of 350 =
  16. 16.50% of 650 =
  17. 17.5% of 720 =
  18. 18.50% of 630 =
  19. 19.20% of 560 =
  20. 20.10% of 460 =
  21. 21.5% of 900 =
  22. 22.1% of 40 =
  23. 23.50% of 240 =
  24. 24.50% of 210 =
  25. 25.10% of 80 =
  26. 26.5% of 620 =
  27. 27.5% of 380 =
  28. 28.25% of 40 =
  29. 29.50% of 800 =
  30. 30.10% of 780 =
  31. 31.1% of 130 =
  32. 32.50% of 840 =
  33. 33.15% of 420 =
  34. 34.1% of 290 =
  35. 35.20% of 320 =
  36. 36.15% of 290 =
  37. 37.20% of 540 =
  38. 38.5% of 40 =
  39. 39.1% of 190 =
  40. 40.1% of 480 =

Answer key

  1. 102
  2. 46.5
  3. 17.5
  4. 19.5
  5. 116
  6. 177.5
  7. 32
  8. 176
  9. 47.5
  10. 3.5
  11. 124
  12. 35
  13. 16.5
  14. 0.9
  15. 87.5
  16. 325
  17. 36
  18. 315
  19. 112
  20. 46
  21. 45
  22. 0.4
  23. 120
  24. 105
  25. 8
  26. 31
  27. 19
  28. 10
  29. 400
  30. 78
  31. 1.3
  32. 420
  33. 63
  34. 2.9
  35. 64
  36. 43.5
  37. 108
  38. 2
  39. 1.9
  40. 4.8

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